Terminal positioning method, terminal, base station and LMF

Abstract

The present disclosure provides a terminal positioning method, a terminal, a base station, and an LMF, and relates to the technical field of wireless communication. A terminal performs ATA and / or AFA according to a notification signaling transmitted from a network side device, and transmits time information when the ATA and / or AFA is performed by the terminal, the notification signaling includes instruction information for instructing the terminal to perform ATA and / or AFA, and the time information of the ATA and / or AFA is used to determine the position of the terminal. With this method, the LMF can determine the position of the terminal based on each positioning measurement amount obtained within a time range in which the terminal performed ATA and / or AFA two adjacent times, thereby improving the terminal positioning accuracy.

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of wireless communication, and in particular to a terminal positioning method, a terminal, a base station, and an LMF. [Background technology]

[0002] Currently, in 5G positioning systems, due to the frequency deviation of the crystal oscillators used in 5G base stations and terminals, terminals default to performing Autonomous Time Adjustment (ATA) and Autonomous Frequency Adjustment (AFA) operations. In 5G SideLink (SL) positioning systems, vehicle-to-everything-UE (V2X-UE) adjusts its receive and transmit timing based on the received synchronization signal / PBCH block (SSB), or when switching from an in-coverage scenario to an out-of-coverage scenario, the V2X-UE also defaults to performing ATA and / or AFA.

[0003] In the Downlink-Time Difference of Arrival (DL-TDOA), Uplink-Time Difference of Arrival (UL-TDOA) or Multi-cell Round Trip Time (Multi-RTT) positioning methods, the ATA and AFA operations of the terminal affect the terminal's positioning accuracy. Summary of the Invention

[0004] Embodiments of the present disclosure provide a terminal positioning method, a terminal, a network side device, and a location management function (LMF) that can improve the terminal positioning accuracy by processing positioning measurements in an integrated manner based on time information of an ATA and / or an AFA.

[0005] In a first aspect, an embodiment of the present disclosure provides a terminal positioning method applied to a terminal, the method comprising: performing ATA and / or AFA according to notification signaling sent from a network side device, the notification signaling including instruction information instructing the terminal to perform ATA and / or AFA; and transmitting time information when the ATA and / or AFA was performed by the terminal, the time information of the ATA and / or AFA being used to determine the location of the terminal.

[0006] In the terminal positioning method provided by the embodiment of the present disclosure, the terminal performs ATA and / or AFA according to notification signaling transmitted from the network side device, and transmits time information of the ATA and / or AFA to the LMF. In this manner, the LMF can determine the position of the terminal based on each positioning measurement amount obtained within the time range in which the terminal performed ATA and / or AFA two adjacent times, thereby improving the accuracy of terminal positioning.

[0007] In an alternative embodiment, before performing ATA and / or AFA according to the notification signaling sent from the network side device, the method includes: Sending a report to the network side device indicating that the terminal supports performing ATA and / or AFA within a valid adjustment window (VAW), and receiving a notification signaling sent from the network side device; or The method further includes sending a report to the network side device that the terminal supports performing the ATA and / or AFA according to a predefined criterion, and receiving notification signaling sent from the network side device.

[0008] In an alternative embodiment, the instruction information included in the notification signaling includes a VAW configuration parameter, and the step of performing ATA and / or AFA according to the notification signaling sent from the network side device includes: When the time range in which the VAW indicated by the VAW configuration parameter is located does not overlap with the signal processing time range, the step of performing ATA and / or AFA within the time range in which the VAW is located, wherein the signal processing time range is the time range in which the positioning reference signal is processed, is included.

[0009] In an alternative embodiment, the instruction information included in the notification signaling further includes a priority type parameter for indicating a priority relationship between a VAW and a positioning reference signal, and the step of performing ATA and / or AFA according to the notification signaling sent from the network side device includes: If the time range in which the VAW indicated by the VAW configuration parameter is located overlaps partially or completely with the signal processing time range, the method further includes a step of performing ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal.

[0010] In an alternative embodiment, the step of performing ATA and / or AFA within a time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal includes: If the priority of the VAW is higher than the priority of the positioning reference signal, performing ATA and / or AFA at a first time point, which is an arbitrary time point within a time range in which the VAW is located; and if the priority of the VAW is lower than the priority of the positioning reference signal, performing ATA and / or AFA at any time within the time range in which the VAW is located except for a second time, the second time being the time when the terminal processes the positioning reference signal.

[0011] In one alternative embodiment, the instruction information included in the notification signaling includes a predefined criterion, which instructs the terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0012] In an alternative embodiment, the positioning reference signal is Downlink The signal processing time range is a measurement gap (MG) or a downlink positioning reference signal processing window (PPW) time range determined by a resource configuration parameter of the DL PRS transmitted from the LMF, and processing the positioning reference signal means receiving and measuring the DL PRS transmitted from the base station, or The positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), the signal processing time range is determined by a resource configuration parameter of the UL SRS-Pos transmitted from the base station, and processing the positioning reference signal means transmitting the UL SRS-Pos to the base station, or The positioning reference signal is a sidelink positioning reference signal (SL PRS), the terminal is a receiving terminal, the signal processing time range is determined by the time range of MG or PPW indicated in the resource configuration parameter of the SL PRS transmitted from the LMF, and processing the positioning reference signal means receiving and measuring the SL PRS transmitted from the transmitting terminal, or The positioning reference signal is an SL PRS, the terminal is a transmitting terminal, the signal processing time range is determined by a resource configuration parameter of the SL PRS transmitted from the base station, and processing the positioning reference signal means transmitting the SL PRS to the receiving terminal.

[0013] In an alternative embodiment, the notification signaling is a Long Term Evolution Positioning Protocol (LPP) signaling sent from the LMF, or The notification signaling may be Radio Resource Control (RRC) signaling, Media Access Control control element (MAC) signaling, or Downlink Control Information (DCI) signaling sent from the base station.

[0014] In a second aspect, an embodiment of the present disclosure provides a terminal positioning method applied to a base station, the method comprising: receiving a terminal capability report sent from a first terminal, the terminal capability report characterizing that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to a predefined criterion; sending notification signaling, wherein the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0015] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or The notification signaling includes a predefined criterion, which instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, the positioning reference signal being a downlink positioning reference signal (DL PRS), an uplink positioning reference signal (UL SRS-Pos), or a sidelink positioning reference signal (SL PRS), and the signal processing time range being a time range for processing the positioning reference signal.

[0016] In one alternative embodiment, the base stations include a serving base station and a neighboring base station.

[0017] In an alternative embodiment, the notification signaling is Radio Resource Control (RRC) signaling, Medium Access Control Layer Control Element (MAC CE) signaling or Downlink Control Information (DCI) signaling.

[0018] In a third aspect, an embodiment of the present disclosure provides a terminal positioning method applied to a location management function entity (LMF), the method comprising: The method includes receiving time information transmitted from a first terminal when the first terminal performed ATA and / or AFA, and determining the location of the first terminal based on the time information of the ATA and / or AFA.

[0019] In an alternative embodiment, determining the location of the first terminal based on time information of the ATA and / or AFA comprises: determining a time range in which the first terminal performed ATA and / or AFA two adjacent times based on the received ATA and / or AFA time information; determining a position of the first terminal based on positioning measurements of the first terminal acquired within the time range, the positioning measurements being obtained by measuring a positioning reference signal corresponding to the first terminal.

[0020] In one alternative embodiment, before receiving time information transmitted from the first terminal at which the first terminal performed ATA and / or AFA, the method includes: receiving a terminal capability report sent from a first terminal, the terminal capability report characterizing that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to a predefined criterion; The method further includes: sending notification signaling, wherein the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0021] In one alternative embodiment, the notification signaling is LPP signaling.

[0022] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or The notification signaling includes a predefined criterion, which instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0023] In an alternative embodiment, the positioning reference signal is a downlink positioning reference signal (DL PRS), and the positioning measurement is a reference signal time difference (RSTD) transmitted from the first terminal, a terminal transmission / reception time difference, a downlink arrival phase, i.e., a carrier phase measurement (Phase Of Arrival: POA), or a downlink carrier phase measurement difference (Phase Difference Of Arrival: PDOA); The positioning reference signal is an UL SRS-Pos, and the positioning measurement quantity is an uplink relative time of arrival (RTOA), a base station transmission / reception time difference, an uplink POA, or an uplink PDOA transmitted from a base station; The positioning reference signal is a sidelink positioning reference signal (SL PRS), the first terminal is a receiving terminal, and the positioning measurement quantity is a time difference of arrival (TDOA) transmitted from the first terminal, a time difference of transmission and reception at the receiving terminal, a sidelink POA, or a sidelink POA; or The positioning reference signal is a SL PRS, the first terminal is a transmitting terminal, and the positioning measurement is a transmission and reception time difference of the first terminal.

[0024] In an alternative embodiment, if the positioning reference signal is a DL PRS, the method further comprises: The method further includes receiving a positioning measurement amount and quality information of the positioning measurement amount obtained by measuring the DL PRS, transmitted from the first terminal.

[0025] In an alternative embodiment, when the positioning reference signal is a SL PRS and the first terminal is a receiving terminal, the method comprises: The method further includes receiving a positioning measurement value and quality information of the positioning measurement value obtained by measuring the SL PRS, transmitted from the first terminal.

[0026] In one alternative embodiment, the quality information comprises a Signal-to-Noise Ratio (SINR), a Signal-to-Interference and Noise Ratio (SINR), or a variance of the measurement error.

[0027] In a fourth aspect, an embodiment of the present disclosure provides a terminal, the terminal comprising: An adjustment unit for performing ATA and / or AFA according to notification signaling sent from a network side device, where the notification signaling includes instruction information for instructing the terminal to perform ATA and / or AFA; a first transmitting unit for transmitting time information when the ATA and / or AFA was performed by the terminal, the time information of the ATA and / or AFA being used to determine the location of the terminal.

[0028] In a fifth aspect, an embodiment of the present disclosure provides a base station, wherein the base station comprises: A first receiving unit for receiving a terminal capability report transmitted from a first terminal, wherein the terminal capability report is characterized in that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to a predefined criterion; a second transmitting unit for transmitting notification signaling, the notification signaling being used to instruct the first terminal to perform ATA and / or AFA.

[0029] In a sixth aspect, an embodiment of the present disclosure provides a Location Management Function Entity (LMF), wherein the LMF comprises: a second receiving unit for receiving time information transmitted from a first terminal when the first terminal performed ATA and / or AFA; and a determining unit for determining the location of the first terminal based on the time information of the ATA and / or AFA.

[0030] In a seventh aspect, an embodiment of the present disclosure provides a terminal including a memory, a transceiver, and a processor, the memory stores computer instructions; the transceiver transmits and receives data under the control of the processor; The processor reads the computer program in the memory and performing ATA and / or AFA according to notification signaling sent from a network side device, the notification signaling including instruction information instructing the terminal to perform ATA and / or AFA; and controlling a transceiver to transmit time information when the ATA and / or AFA was performed by the terminal, the time information of the ATA and / or AFA being used to determine the location of the terminal.

[0031] In an alternative embodiment, the transceiver comprises: The terminal sends a report to the network side device that supports performing ATA and / or AFA within a valid coordination time window (VAW), and receives notification signaling sent from the network side device; or It may further be used to send a report to the network side device that supports the terminal performing the ATA and / or AFA according to predefined criteria, and to receive notification signaling sent from the network side device.

[0032] In an alternative embodiment, the indication information included in the notification signaling includes a VAW configuration parameter, and the processor: If the time range in which the VAW indicated by the VAW configuration parameter is located does not overlap with the signal processing time range, it is used to perform ATA and / or AFA within the time range in which the VAW is located, and the signal processing time range is the time range in which the positioning reference signal is processed.

[0033] In an alternative embodiment, the indication information included in the notification signaling further includes a priority type parameter for indicating a priority relationship between the VAW and the positioning reference signal, and the processor: If the time range in which the VAW indicated by the VAW configuration parameter is located overlaps partially or completely with the signal processing time range, it can be further used to perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal.

[0034] In an alternative embodiment, the processor: If the priority of the VAW is higher than the priority of the positioning reference signal, perform ATA and / or AFA at a first time point, which is an arbitrary time point within the time range in which the VAW is located, and discard the positioning reference signal at the first time point; If the priority of the VAW is lower than the priority of the positioning reference signal, it is used to perform ATA and / or AFA at any time within the time range in which the VAW is located except for a second time, the second time being the time when the terminal processes the positioning reference signal.

[0035] In one alternative embodiment, the instruction information included in the notification signaling includes a predefined criterion, which instructs the terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0036] In an alternative embodiment, the positioning reference signal is a downlink positioning reference signal (DL PRS), and the signal processing time range is a measurement interval (MG) or a time range of a downlink positioning reference signal execution window (PPW) determined by a resource configuration parameter of the DL PRS transmitted from the LMF, and processing the positioning reference signal means receiving and measuring the DL PRS transmitted from the base station; The positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), the signal processing time range is determined by a resource configuration parameter of the UL SRS-Pos transmitted from the base station, and processing the positioning reference signal means transmitting the UL SRS-Pos to the base station; or The positioning reference signal is a sidelink positioning reference signal (SL PRS), the terminal is a receiving terminal, the signal processing time range is determined by the time range of MG or PPW indicated in the resource configuration parameter of the SL PRS transmitted from the LMF, and processing the positioning reference signal means receiving and measuring the SL PRS transmitted from the transmitting terminal, or The positioning reference signal is an SL PRS, the terminal is a transmitting terminal, the signal processing time range is determined by a resource configuration parameter of the SL PRS transmitted from the base station, and processing the positioning reference signal means transmitting the SL PRS to the receiving terminal.

[0037] In an alternative embodiment, the notification signaling is a Long Term Evolution Positioning Protocol (LPP) signaling sent from the LMF, or The notification signaling is a radio resource control (RRC) signaling, a medium access control layer control element (MAC CE) signaling, or a downlink control information (DCI) signaling sent from the base station.

[0038] In an eighth aspect, an embodiment of the present disclosure provides a base station including a memory, a transceiver, and a processor, wherein: the memory stores computer instructions; the transceiver is used under the control of the processor to receive a terminal capability report sent from a first terminal and to send notification signaling; The terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to predefined criteria, and the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0039] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or The notification signaling includes a predefined criterion, which instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, the positioning reference signal being a downlink positioning reference signal (DL PRS), an uplink positioning reference signal (UL SRS-Pos), or a sidelink positioning reference signal (SL PRS), and the signal processing time range being a time range for processing the positioning reference signal.

[0040] In an alternative embodiment, the base stations include a serving base station and a neighboring base station.

[0041] In an alternative embodiment, the notification signaling is Radio Resource Control (RRC) signaling, Medium Access Control Layer Control Element (MAC CE) signaling or Downlink Control Information (DCI) signaling.

[0042] In a ninth aspect, an embodiment of the present disclosure provides a location management function entity (LMF) including a memory, a transceiver, and a processor, wherein: the memory stores computer instructions; the transceiver transmits and receives data under the control of a processor; The processor reads the computer program in the memory and controlling the transceiver to receive time information transmitted from a first terminal when the first terminal performed ATA and / or AFA; determining the location of the first terminal based on time information of the ATA and / or AFA.

[0043] In an alternative embodiment, the processor: Determine a time range in which the first terminal performed the ATA and / or AFA two adjacent times based on the received ATA and / or AFA time information; It is used to determine the position of the first terminal based on positioning measurements of the first terminal acquired within the time range, the positioning measurements being obtained by measuring a positioning reference signal corresponding to the first terminal.

[0044] In an alternative embodiment, the transceiver is further used for receiving a terminal capability report sent from a first terminal and sending notification signaling; The terminal capability report may characterize that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to predefined criteria, and the notification signaling may be used to instruct the first terminal to perform ATA and / or AFA.

[0045] In an alternative embodiment, the notification signaling is Long Term Evolution Positioning Protocol (LPP) signaling.

[0046] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or The notification signaling includes a predefined criterion, which instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0047] In an alternative embodiment, the positioning reference signal is a downlink positioning reference signal (DL PRS), and the positioning measurement quantity is a reference signal time difference (RSTD) transmitted from the first terminal, a terminal transmission / reception time difference, a downlink arrival carrier phase value (POA) or a downlink carrier phase difference (PDOA); The positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), and the positioning measurement quantity is an uplink relative time of arrival (RTOA), a base station transmission and reception time difference, an uplink POA, or an uplink PDOA transmitted from a base station; The positioning reference signal is a sidelink positioning reference signal (SL PRS), the first terminal is a receiving terminal, and the positioning measurement quantity is a time difference of arrival (TDOA) transmitted from the first terminal, a time difference of transmission and reception at the receiving terminal, a sidelink POA, or a sidelink POA; or The positioning reference signal is a SL PRS, the first terminal is a transmitting terminal, and the positioning measurement is a transmission and reception time difference of the first terminal.

[0048] In an alternative embodiment, if the positioning reference signal is a DL PRS, transceiver teeth, Receives a positioning measurement amount and quality information of the positioning measurement amount obtained by measuring the DL PRS transmitted from the first terminal. For moreover Used .

[0049] In an alternative embodiment, if the positioning reference signal is a SL PRS and the first terminal is a receiving terminal, transceiver teeth, receiving a positioning measurement value and quality information of the positioning measurement value obtained by measuring the SL PRS transmitted from the first terminal; For moreover Used .

[0050] In an alternative embodiment, the quality information comprises a signal-to-noise ratio (SNR), a signal-to-interference-and-noise ratio (SINR), or a variance of the measurement error.

[0051] In a tenth aspect, an embodiment of the present disclosure provides a terminal positioning system including a terminal, a base station, and a location management function entity (LMF), wherein: Terminal is a terminal according to any one of the seventh aspects, the base station is a base station according to any one of the eighth aspects, and the LMF is an LMF according to any one of the ninth aspects.

[0052] In an eleventh aspect, an embodiment of the present disclosure provides a computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, effectuate a method according to any one of the first, second, or third aspects.

[0053] The technical effects of any one of the second to eleventh aspects can be understood by referring to the technical effects of the first aspect, and a description thereof will be omitted. [Brief explanation of the drawings]

[0054] In order to more clearly describe the technical solutions of the embodiments or related arts according to the present disclosure, the drawings necessary for describing the embodiments or related arts will be briefly described below. It is obvious that the drawings described below are merely some embodiments of the present disclosure, and those skilled in the art can obtain different drawings from these drawings without exerting their creative power. [Figure 1] FIG. 1 is a diagram illustrating an application scenario of a terminal positioning method applied to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic diagram of an interaction flowchart of a downlink positioning method provided by an embodiment of the present disclosure; [Figure 3] FIG. 10 is a schematic diagram illustrating a time range in which a VAW is located and a time range in which a MG or a PPW do not overlap, provided by an embodiment of the present disclosure. [Figure 4] FIG. 10 is a schematic diagram illustrating the partial overlap of the time range in which the VAW is located and the time range of the MG or PPW provided by the embodiment of the present disclosure. [Figure 5] 1 is a schematic diagram illustrating a relationship in which a terminal performs ATA and / or AFA in Multi-RTT positioning provided by an embodiment of the present disclosure, and the terminal calculates a terminal transmission / reception time difference. [Figure 6] FIG. 2 is a schematic diagram of an interaction flowchart of an uplink positioning method provided by an embodiment of the present disclosure; [Figure 7] 1 is a schematic diagram illustrating a time range in which a VAW is located and a time range in which a terminal transmits an UL SRS-Pos to a base station, which are provided by an embodiment of the present disclosure, do not overlap. [Figure 8] FIG. 1 is a schematic diagram of an interaction flowchart of a sidelink positioning method provided by an embodiment of the present disclosure. [Figure 9] FIG. 10 is a schematic diagram of an interaction flowchart of another sidelink positioning method provided by an embodiment of the present disclosure. [Figure 10] FIG. 10 is a schematic diagram illustrating a relationship in which a terminal performs ATA and / or AFA in another Multi-RTT positioning provided by an embodiment of the present disclosure, and the terminal calculates a terminal transmission / reception time difference. [Figure 11] 1 is a schematic diagram of a transmitting terminal and a receiving terminal performing ATA and / or AFA provided by an embodiment of the present disclosure; [Figure 12] 1 is a flow diagram of a terminal positioning method provided by an embodiment of the present disclosure; [Figure 13]1 is a flow diagram of a terminal positioning method provided by an embodiment of the present disclosure; [Figure 14] 1 is a flow diagram of a terminal positioning method provided by an embodiment of the present disclosure; [Figure 15] FIG. 2 is a structural block diagram of a terminal provided by an embodiment of the present disclosure; [Figure 16] FIG. 2 is a structural block diagram of a base station provided by an embodiment of the present disclosure; [Figure 17] FIG. 2 is a structural block diagram of an LMF provided by an embodiment of the present disclosure. [Figure 18] FIG. 2 is a structural schematic diagram of a terminal provided by an embodiment of the present disclosure; [Figure 19] FIG. 2 is a structural schematic diagram of a base station provided by an embodiment of the present disclosure; [Figure 20] 1 is a structural schematic diagram of an LMF provided by an embodiment of the present disclosure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0055] Specific embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain and elucidate the present disclosure, and are not intended to limit the present disclosure. In the examples of the present disclosure, the terms "first" and "second" are used to distinguish between similar objects and are not used to describe a specific order or precedence order. The term "and / or" in the examples of the present disclosure describes a relation between associated objects and indicates that three relationships can exist. For example, A and / or B can indicate that A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the preceding and following associated objects are in an "or" relationship.

[0056] The network architectures and service scenarios described in the embodiments of the present disclosure are technical solutions for more clearly explaining the embodiments of the present disclosure, and do not limit the technical solutions provided by the embodiments of the present disclosure. With the evolution of network architectures and the emergence of new service scenarios, those skilled in the art can see that the technical solutions provided by the embodiments of the present disclosure can be similarly applied to similar technical problems.

[0057] Currently, in 5G positioning systems, due to frequency deviations in the crystal oscillators used in 5G base stations and terminals, terminals default to ATA and AFA operation. In 5G SL positioning systems, the V2X-UE adjusts the receive timing and transmit timing based on the received SSB, or when switching from an in-coverage scenario to an out-of-coverage scenario, the V2X-UE also defaults to ATA and / or AFA.

[0058] In DL-TDOA, UL-TDOA, or Multi-RTT positioning methods, the ATA and AFA operations of the terminal affect the terminal's positioning accuracy.

[0059] Based on this, the present disclosure provides a terminal positioning method, a terminal, a base station, and an LMF. Here, the terminal positioning method includes a step of the terminal performing ATA and / or AFA according to notification signaling transmitted from a network side device, and a step of the terminal transmitting time information of the terminal performing ATA and / or AFA to the LMF. Here, the notification signaling includes instruction information instructing the terminal to perform ATA and / or AFA. With this method, the LMF can determine the location of the terminal based on positioning measurements acquired within a time range in which the terminal performed ATA and / or AFA two adjacent times, thereby improving the terminal positioning accuracy.

[0060] 1 is a structural schematic diagram of a terminal positioning system applied to an embodiment of the present disclosure. The embodiment of the present disclosure is applied to a terminal positioning system including at least one terminal 101, one base station 102, and one LMF 103, where the base station 102 may be a serving base station that provides service to the terminal 101, or may be a neighboring base station whose distance to the terminal 101 is less than a distance threshold, and the distance threshold may be 50 m or 100 m, but the present disclosure is not limited thereto.

[0061] In one embodiment, the base station 102 or the LMF 103 may transmit notification signaling to the terminal 101, the notification signaling including instruction information instructing the terminal 101 to perform ATA and / or AFA. After receiving the notification signaling, the terminal 101 may perform the ATA and / or AFA operation according to the notification signaling and transmit time information of the ATA and / or AFA to the LMF 103. The LMF 103 may determine the location of the terminal 101 based on each positioning measurement within a time range in which the terminal 101 performed the ATA and / or AFA two adjacent times.

[0062] The terminal positioning method provided by the present disclosure includes a downlink positioning method, an uplink positioning method, and a sidelink positioning method. Different positioning methods will be described in detail below according to specific embodiments.

[0063] 2 is an interaction flowchart of a downlink positioning method provided by an embodiment of the present disclosure, which is applied to downlink positioning or multi-RTT positioning in this embodiment. As shown in FIG. 2, this method is described using a network side device and terminal a as an example, where terminal a means any one terminal. Specifically, this method includes the following steps:

[0064] In step S201, terminal a transmits a terminal capability report to a network side device.

[0065] Here, the network side device may be a base station or an LMF, and the base station may be a serving base station that provides service to terminal a or a neighboring base station of terminal a. Here, the LMF may be an LMF connected to terminal a or a base station.

[0066] The terminal capability report may be used to characterize that terminal a supports performing ATA and / or AFA within the VAW, and may be used to characterize that terminal a supports performing ATA and / or AFA according to predefined criteria.

[0067] In step S202, the network side device sends a notification signaling to terminal a.

[0068] In one embodiment, when the network side device is a base station, the notification signaling may be RRC signaling, MAC CE signaling, or DCI signaling sent by the base station.When the network side device is an LMF, the notification signaling may be LPP signaling sent by the LMF.

[0069] Here, the notification signaling includes instruction information instructing terminal a to perform ATA and / or AFA. The instruction information may include a VAW configuration parameter and a priority type parameter indicating a priority relationship between DL PRS and VAW. The instruction information may include a predefined criterion for instructing terminal a not to perform ATA and / or AFA within a signal processing time range, but to perform ATA and / or AFA after processing the positioning reference signal. Here, the signal processing time range is a time range for processing the positioning reference signal.

[0070] In step S203, the terminal a performs ATA and / or AFA according to the notification signaling sent from the network side device.

[0071] In an alternative embodiment, before the terminal performs ATA and / or AFA according to the notification signaling sent from the network side device, the terminal may receive resource configuration parameters of the DL PRS sent from the LMF and determine a time range of the MG or PPW according to the resource configuration parameters of the DL PRS. Within the time range, the terminal a may receive the DL PRS sent from the base station and measure the DL PRS to obtain downlink positioning measurements.

[0072] In one embodiment, assuming that the notification signaling includes a VAW configuration parameter and a priority type parameter instructing terminal a to perform ATA and / or AFA, after receiving the notification signaling, terminal a can compare the time range in which the VAW is located indicated by the VAW configuration parameter with the time range of the MG or PPW determined by the resource configuration parameter of the DL PRS to determine whether the time range in which the VAW is located overlaps with the time range of the MG or PPW.

[0073] For example, in one embodiment, if the time range in which the VAW is located does not overlap with the time range of the MG or PPW, as shown in Figure 3, L1 is the time range in which the VAW is located, T1 is the start point of the VAW, T2 is the end point of the VAW, L2 is the time range of the MG or PPW, T3 is the start point of the MG or PPW, and T4 is the end point of the MG or PPW. Terminal a can perform ATA and / or AFA during the time range in which the VAW is located, i.e., from time T1 to time T2. During the time range of the MG or PPW, i.e., from time T3 to time T4, terminal a can receive the DL PRS transmitted from the base station and measure the DL PRS to obtain downlink positioning measurements.

[0074] In the embodiments of the present disclosure, the downlink positioning measurement quantity may include an RSTD, a terminal transmission / reception time difference, a downlink POA, or a downlink PDOA.

[0075] In another embodiment, when part or all of the time range in which the VAW is located overlaps with the time range of the MG or PPW, as shown in FIG. 4, L3 is the time range in which the VAW is located, T5 is the start time of the VAW, T6 is the end time of the VAW, L4 is the time range of the MG or PPW, T7 is the start time of the MG or PPW, T8 is the end time of the MG or PPW, and T5 < T7 < T6 < T8. That is, the time range in which the VAW is located partially overlaps with the time range of the MG or PPW, and the terminal a determines the priority relationship between the VAW and the DL PRS according to the priority type parameter, and can perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the DL PRS.

[0076] Exemplarily, in one embodiment, when the priority of the VAW is higher than the priority of the DL PRS, the terminal can select any point in time within the time range in which the VAW is located as the first point in time, and perform ATA and / or AFA at the first point in time. At the first point in time, when the terminal a receives the DL PRS transmitted from the base station, that is, when the terminal a performs ATA and / or AFA and a collision occurs at the time point of processing the DL PRS and / or an orthogonal frequency division multiplexing (OFDM) symbol, the terminal can discard the DL PRS received at the first point in time. That is, the terminal a can regard the DL PRS received at the first point in time as an invalid signal. When the terminal a performs ATA and / or AFA and no collision occurs at the time point of processing the DL PRS and / or the OFDM symbol, the DL PRS is a valid signal, that is, the terminal a can measure the received DL PRS to obtain the downlink positioning measurement quantity.

[0077] In another embodiment, if the priority of the VAW is lower than the priority of the DL PRS, assuming that terminal a receives the DL PRS transmitted from the base station at a second time point within the time range of the MG or PPW, terminal a can measure the DL PRS to obtain downlink positioning measurements. The second time point is any time point within the time range of the MG or PPW. Terminal a can perform ATA and / or AFA at any time point except the second viewpoint within the time range in which the VAW is located. In an embodiment of the present disclosure, if there is no time point at which ATA and / or AFA can be performed within a DL PRS period, the period is an invalid period.

[0078] In another embodiment, assuming that the notification signaling includes predefined criteria for instructing terminal a to perform ATA and / or AFA, terminal a, after receiving the notification signaling, can first measure the DL PRS transmitted from the received base station according to the predefined criteria to obtain downlink positioning measurements, and then perform ATA and / or AFA. That is, terminal a does not perform ATA and / or AFA within the time range in which it receives and measures the DL PRS transmitted from the base station.

[0079] Exemplarily, when the positioning method is Multi-RTT positioning, within the time range in which terminal a calculates terminal transmission and reception time difference, i.e., within the time range in which terminal a measures DL PRS and acquires downlink positioning measurement quantities, terminal a cannot perform ATA and / or AFA. Exemplarily, as shown in FIG. 5, the time range in which terminal a calculates terminal transmission and reception time difference is [t1-Δt, t2+Δt], where Δt is the remaining amount, t3 is the start point of the time range in which terminal a performs ATA and / or AFA, and t4 is the end point of the time range in which terminal a performs ATA and / or AFA.

[0080] In step S204, terminal a transmits time information of the ATA and / or AFA to the LMF.

[0081] After the terminal a performs ATA and / or AFA according to the notification signaling in step S203, the terminal a may send indication information and time information that the terminal a performed ATA and / or AFA to the LMF, where the indication information is used to indicate that the terminal a performed ATA and / or AFA.

[0082] In step S205, the LMF determines the location of terminal a.

[0083] In one embodiment, before the LMF determines the location of terminal a, the LMF may also receive downlink positioning measurements transmitted from terminal a. The downlink positioning measurements are transmitted to the LMF after terminal a measures the DL PRS transmitted from the terminal. The LMF may receive multiple downlink positioning measurements within a time range in which the terminal performed ATA and / or AFA two adjacent times.

[0084] In one embodiment, before the LMF determines the location of terminal a, the LMF may also receive quality information of downlink positioning measurements transmitted from terminal a and base station location information transmitted from the base station, where the quality information of downlink positioning measurements may be one or more of SNR, SINR, or measurement error variance.

[0085] In this way, the LMF can receive time information of ATA and / or AFA transmitted each time the terminal a performs ATA and / or AFA, and determine the time when the terminal a performed ATA and / or AFA two adjacent times. The LMF can determine the location of the terminal a based on the downlink positioning measurement amount transmitted from the terminal a, the quality information of the downlink positioning measurement amount, and the location information of each base station associated with the terminal a, which are received within the time range when the terminal a performed ATA and / or AFA two adjacent times.

[0086] Specifically, in one embodiment, the LMF calculates t using Equations 1 and 2 based on the received downlink positioning measurements and the quality information of the downlink positioning measurements. k Weighting corresponding to time points was The downlink positioning measurements can be determined, where t k The time point may be any time point within the time range in which terminal a performed ATA and / or AFA two adjacent times.

number

number

number

[0087] The weighting parameter allows for different weightings. a The weighting can be determined according to the algorithm and / or quality information of the positioning measurements. a If the algorithm is an average weighting algorithm, the weighting parameters are a0=a1=...=a M-1 =1 / M, or weight parameters are a0=1, a1=… =a M-1 =0, or the weighting parameter is a M-1 =1, a0=… =a M-2=0, or the weighting parameter is a n =1, a0=… =a M-1 = 0. Here, a n The measurement quality of the downlink positioning measurement corresponding to is the highest.

[0088] Weightings corresponding to each time point within the time range in which ATA and / or AFA are performed two adjacent times by terminal a was After determining the downlink positioning measurements, the LMF calculates the weightings corresponding to each time point. was The location of terminal a can be determined based on the downlink positioning measurements and the location information of each base station.

[0089] 6 shows an interaction flowchart of an uplink positioning method provided by an embodiment of the present disclosure, which is applied to uplink positioning or multi-RTT positioning. As shown in FIG. 6, this method is described using a network side device and terminal a as an example, where terminal a refers to any one terminal. Specifically, this method includes the following steps:

[0090] In step S601, terminal a transmits a terminal capability report to the network side device.

[0091] In step S602, the network side device sends notification signaling to terminal a.

[0092] In step S603, the terminal a performs ATA and / or AFA according to the notification signaling sent from the network side device.

[0093] In an optional embodiment, before terminal a performs ATA and / or AFA in accordance with the notification signaling sent from the network side device, terminal a may receive resource configuration parameters of the UL SRS-Pos sent from the base station and determine a time range for transmitting the UL SRS-Pos from terminal a to the base station in accordance with the resource configuration parameters of the UL SRS-Pos.

[0094] In one embodiment, assuming that the notification signaling includes a VAW configuration parameter and a priority type parameter instructing terminal a to perform ATA and / or AFA, after receiving the notification signaling, terminal a can compare the time range in which the VAW is located indicated by the VAW configuration parameter with the time range in which UL SRS-Pos is transmitted from terminal a to the base station determined by the UL SRS-Pos resource configuration parameter, and determine whether the time range in which the VAW is located overlaps with the time range in which terminal a transmits UL SRS-Pos to the base station.

[0095] In one embodiment, if the time range in which the VAW is located does not overlap with the time range in which terminal a transmits UL SRS-Pos to the base station, slot #1 is the time range in which the VAW is located, and slot #2 is the time range in which terminal a transmits UL SRS-Pos to the base station, as shown in Figure 7. Terminal a can perform ATA and / or AFA in the time range in which the VAW is located, i.e., slot #1, and transmit the UL SRS-Pos to the base station in the time range in which terminal a transmits UL SRS-Pos to the base station, i.e., slot #2.

[0096] In another embodiment, if the time range in which the VAW is located overlaps partially or completely with the time range in which terminal a transmits UL SRS-Pos to the base station, terminal a can determine the priority relationship between the VAW and the UL SRS-Pos according to the priority type parameter, and perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the UL SRS-Pos.

[0097] For example, in one embodiment, if the priority of the VAW is higher than the priority of the UL SRS-Pos, terminal a may select any time point within the time range in which the VAW is located as a first time point and perform ATA and / or AFA at the first time point. If terminal a needs to transmit UL SRS-Pos to the base station at the first time point, i.e., if terminal a performs ATA and / or AFA and a collision occurs at the time and / or in the Orthogonal Frequency Division Multiplexing (OFDM) symbol when processing the UL SRS-Pos, terminal a may treat the UL SRS-Pos as an invalid signal, i.e., not transmit the UL SRS-Pos to the base station. If terminal a performs ATA and / or AFA and a collision does not occur at the time and / or in the Orthogonal Frequency Division Multiplexing (OFDM) symbol when processing the DL PRS, the UL SRS-Pos is a valid signal, and terminal a may transmit the UL SRS-Pos to the base station.

[0098] In another embodiment, if the priority of the VAW is lower than the priority of the UL SRS-Pos, it is assumed that the terminal a transmits the UL SRS-Pos to the base station at a second time point within the time range in which the terminal a transmits the UL SRS-Pos to the base station, where the second time point is any time point within the time range in which the terminal a transmits the UL SRS-Pos to the base station. The terminal a can perform ATA and / or AFA at any time point except the second time point within the time range in which the VAW is located. In an embodiment of the present disclosure, if there is no time point at which ATA and / or AFA can be performed within one UL SRS-Pos cycle, the cycle is an invalid cycle.

[0099] In another embodiment, assuming that the notification signaling includes a predefined criterion for instructing terminal a to perform ATA and / or AFA, terminal a may perform ATA and / or AFA after first transmitting UL SRS-Pos to the base station according to the predefined criterion after receiving the notification signaling, i.e., terminal a does not perform ATA and / or AFA at the time of transmitting UL SRS-Pos to the base station.

[0100] In step S604, the base station measures the UL SRS-Pos to obtain uplink positioning measurements.

[0101] After receiving the UL SRS-Pos transmitted from the terminal a in step S603, the base station measures the UL SRS-Pos to obtain uplink positioning measurements. The uplink positioning measurements may include RTOA, base station transmission / reception time difference, uplink POA, or uplink PDOA.

[0102] In step S605, the base station sends the uplink positioning measurements to the LMF.

[0103] In step S606, terminal a transmits the time information of the ATA and / or AFA to the LMF.

[0104] In step S603, after the terminal a performs ATA and / or AFA according to the notification signaling, the terminal a receives indication information indicating that the terminal a has performed ATA and / or AFA. and Time information can be sent to the LMF.

[0105] In step S607, the LMF determines the location of terminal a.

[0106] In one embodiment, before the LMF determines the location of terminal a, the LMF may also receive base station location information transmitted from the base station.

[0107] In this way, the LMF can receive time information of ATA and / or AFA transmitted each time the terminal a performed ATA and / or AFA, and determine the time when the terminal a performed ATA and / or AFA two adjacent times. The LMF can determine the location of the terminal a based on uplink positioning measurements transmitted from the base stations received within the time range when the terminal performed ATA and / or AFA two adjacent times and location information of each base station associated with the terminal a.

[0108] Illustratively, the LMF can determine the position of terminal a according to equation (1) and equation (2), and the specific implementation is similar to the steps of the downlink positioning method described above, so it will not be described here.

[0109] 8 shows an interaction flowchart of a sidelink positioning method provided by an embodiment of the present disclosure. This method is described using a network side device and a receiving terminal a as an example, where receiving terminal a refers to any one receiving terminal. As shown in FIG. 8, the method includes the following steps:

[0110] In step S801, the receiving terminal a transmits a terminal capability report to the network side device.

[0111] In step S802, the network side device transmits notification signaling to the receiving terminal a.

[0112] In step S803, the receiving terminal a performs ATA and / or AFA according to the notification signaling sent from the network side device.

[0113] In an alternative embodiment, before the receiving terminal a performs ATA and / or AFA according to the notification signaling sent from the network side device, the receiving terminal a may receive resource configuration parameters of the SL PRS sent from the LMF and determine a time range of the MG or PPW according to the resource configuration parameters of the SL PRS. The receiving terminal a may receive the SL PRS sent from the transmitting terminal b within the time range and measure the SL PRS to obtain sidelink positioning measurements.

[0114] In one embodiment, assuming that the notification signaling includes a VAW configuration parameter and a priority type parameter that instructs the receiving terminal a to perform ATA and / or AFA, after receiving the notification signaling, the receiving terminal a can compare the time range in which the VAW is located indicated by the VAW configuration parameter with the time range of the MG or PPW determined by the resource configuration parameter of the SL PRS, and determine whether the time range in which the VAW is located overlaps with the time range of the MG or PPW.

[0115] In one embodiment, when the time range in which the VAW is located does not overlap with the time range in which the MG or PPW is located, the receiving terminal a performs ATA and / or AFA within the time range in which the VAW is located, receives the SL PRS transmitted from the transmitting terminal b within the time range in which the MG or PPW is located, and measures the SL PRS to measure the sidelink positioning measurement quantity.

[0116] In one embodiment of the present disclosure, the sidelink positioning measurement quantity may include TDOA, a terminal transmission / reception time difference of a receiving terminal, SL POA, or SL PDOA.

[0117] In another embodiment, if the time range in which the VAW is located overlaps with the time range of the MG or PPW partially or completely, the receiving terminal a may select the time range in accordance with the priority type parameter. SL PRS and the VAW, and ATA and / or AFA can be performed within the time range in which the VAW is located according to the priority relationship between the SL PRS and the VAW.

[0118] For example, in one embodiment, if the priority of the VAW is higher than the priority of the SL PRS, the receiving terminal a may select any one time point within the time range in which the VAW is located as the first time point, and perform ATA and / or AFA at the first time point. SLWhen receiving a SL PRS, i.e., when receiving terminal a performs ATA and / or AFA and a collision occurs at the time and / or in the OFDM symbol when processing the SL PRS, receiving terminal a can discard the SL PRS corresponding to the first time point. That is, receiving terminal a can treat the SL PRS as an invalid signal. When receiving terminal a performs ATA and / or AFA and a collision does not occur at the time and / or in the OFDM symbol when processing the SL PRS, the SL PRS is a valid signal, that is, receiving terminal a can measure the SL PRS transmitted from receiving terminal b to obtain sidelink positioning measurements.

[0119] In another embodiment, if the priority of the VAW is lower than the priority of the SL PRS, assuming that the receiving terminal a receives the SL PRS transmitted from the transmitting terminal b at a second time point within the time range of the MG or PPW, the receiving terminal a can measure the SL PRS to obtain sidelink positioning measurements. The second time point is any time point within the time range of the MG or PPW. The receiving terminal a can perform ATA and / or AFA at any time point within the time range in which the VAW is located, excluding the second viewpoint. In an embodiment of the present disclosure, if there is no time point at which ATA and / or AFA can be performed within an SL PRS period, the period is an invalid period.

[0120] In another embodiment, assuming that the notification signaling includes predefined criteria for instructing terminal a to perform the received ATA and / or AFA, after receiving the notification signaling, receiving terminal a can perform the ATA and / or AFA after measuring the previously received SL PRS according to the predefined criteria to obtain sidelink positioning measurements, i.e., receiving terminal a does not perform the ATA and / or AFA within the time range in which it receives and measures the SL PRS transmitted from receiving terminal b.

[0121] In step S804, the receiving terminal a transmits the time information of the ATA and / or AFA to the LMF.

[0122] In step S803, after the receiving terminal a performs ATA and / or AFA according to the notification signaling, the receiving terminal a can send indication information and time information that the receiving terminal a performed ATA and / or AFA to the LMF, where the indication information is used to indicate that the receiving terminal a has performed ATA and / or AFA.

[0123] In step S805, the LMF determines the location of the receiving terminal a.

[0124] In one embodiment, before the LMF determines the location of the receiving terminal a, the LMF may receive sidelink positioning measurements transmitted from the receiving terminal a after the receiving terminal a has measured the SL PRS transmitted from the transmitting terminal b. The LMF may receive multiple sidelink positioning measurements within a time range in which the receiving terminal a performed ATA and / or AFA two adjacent times.

[0125] In one embodiment, before the LMF determines the location of the receiving terminal a, the LMF may also receive quality information of the sidelink positioning measurements transmitted from the receiving terminal a and base station location information transmitted from the base station, where the quality information of the sidelink positioning measurements may be one or more of SNR, SINR, or measurement error variance.

[0126] In this way, the LMF receives time information of the ATA and / or AFA performed by the receiving terminal a, which is transmitted each time the receiving terminal a performs the ATA and / or AFA, and can determine the time when the receiving terminal a performed the ATA and / or AFA two adjacent times. The LMF can determine the location of the receiving terminal a based on the downlink positioning measurement amount transmitted from the receiving terminal a, the quality information of the downlink positioning measurement amount, and the location information of each base station associated with the receiving terminal a, which are received within the time range when the receiving terminal a performed the ATA and / or AFA two adjacent times.

[0127] Illustratively, the LMF can be calculated according to Equations 1 and 2: Reception The position of terminal a can be determined, and the specific implementation is the same as the steps of the downlink positioning method described above, so it is omitted here.

[0128] 9 shows an interaction flowchart of another sidelink positioning method provided by an embodiment of the present disclosure. This method is described using a network side device and a transmitting terminal b as an example, where transmitting terminal b refers to any one transmitting terminal. As shown in FIG. 9, the method includes the following steps:

[0129] In step S901, the transmitting terminal b transmits a terminal capability report to the network side device.

[0130] In step S902, the network side device transmits notification signaling to the transmitting terminal b.

[0131] In step S903, the transmitting terminal b performs ATA and / or AFA according to the notification signaling sent from the network side device.

[0132] In an optional embodiment, before the transmitting terminal b performs ATA and / or AFA in accordance with the notification signaling sent from the network side device, the transmitting terminal b may also receive resource configuration parameters of the SL PRS sent from the base station and determine a time range for transmitting the SL PRS from the transmitting terminal b to the receiving terminal a in accordance with the resource configuration parameters of the SL PRS.

[0133] In one embodiment, assuming that the notification signaling includes a VAW configuration parameter and a priority type parameter that instruct the transmitting terminal b to perform ATA and / or AFA, after receiving the notification signaling, the transmitting terminal b can compare the time range in which the VAW is located indicated by the VAW configuration parameter with the time range in which the SL PRS is transmitted from the transmitting terminal b to the receiving terminal a determined by the resource configuration parameter of the SL PRS, and determine whether the time range in which the VAW is located matches the time range in which the SL PRS is transmitted from the transmitting terminal b to the receiving terminal a.

[0134] In one embodiment, if the time range in which the VAW is located does not overlap with the time range in which the SL PRS is transmitted from transmitting terminal b to receiving terminal a, transmitting terminal b can perform ATA and / or AFA within the time range in which the VAW is located and can transmit the SL PRS to receiving terminal a within the time range in which the SL PRS is transmitted from transmitting terminal b to receiving terminal a.

[0135] In another embodiment, if the time range in which the VAW is located overlaps partially or completely with the time range in which the SL PRS is transmitted from the transmitting terminal b to the receiving terminal a, the transmitting terminal b can determine the priority relationship between the VAW and the SL PRS according to the priority type parameter, and perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the SL PRS.

[0136] For example, in one embodiment, if the priority of the VAW is higher than the priority of the SL PRS, the transmitting terminal b can select any time point within the time range in which the VAW is located as the first time point and perform ATA and / or AFA at the first time point. If the transmitting terminal b needs to transmit the SL PRS to the receiving terminal a at the first time point, i.e., if the transmitting terminal b performs ATA and / or AFA and a collision occurs at the time of processing the SL PRS and / or in the Orthogonal Frequency Division Multiplexing (OFDM) symbol, the transmitting terminal b will treat the SL PRS as an invalid signal, i.e., will not transmit the SL PRS to the receiving terminal a. If the transmitting terminal b performs ATA and / or AFA and the SL PRS is PRS and / or orthogonal frequency division multiplexing (OFDM) symbols, if no collision occurs, the SL PRS is a valid signal, i.e., transmitting terminal b can transmit the SL PRS to receiving terminal a.

[0137] In yet another embodiment, if the priority of the VAW is lower than the priority of the SL PRS, it is assumed that transmitting terminal b transmits the SL PRS to receiving terminal a at a second time point within the time range in which transmitting terminal b transmits the SL PRS to receiving terminal a, where the second time point is any time point within the time range in which transmitting terminal b transmits the SL PRS to receiving terminal a. Transmitting terminal b can perform ATA and / or AFA at any time point within the time range in which the VAW is located, except for the second time point. In an embodiment of the present disclosure, if there is no time point in an SL PRS period in which ATA and / or AFA can be performed, the period is an invalid period.

[0138] In another embodiment, assuming that the notification signaling includes predefined criteria for instructing the transmitting terminal b to perform ATA and / or AFA, the transmitting terminal b can perform ATA and / or AFA after first transmitting the SL PRS to the receiving terminal a according to the predefined criteria after receiving the notification signaling, i.e., the transmitting terminal b does not perform ATA and / or AFA at the time of transmitting the SL PRS to the receiving terminal a.

[0139] In step S904, after receiving the SL PRS transmitted from the transmitting terminal b, the receiving terminal a can measure the SL PRS to obtain sidelink positioning measurements.

[0140] After receiving the SL PRS transmitted from the transmitting terminal b in step S903, the receiving terminal a can measure the SL PRS to obtain sidelink positioning measurements.

[0141] In step S905, the receiving terminal a transmits the sidelink positioning measurement amount to the LMF.

[0142] In step S906, the transmitting terminal b transmits the time information of the ATA and / or AFA to the LMF.

[0143] After the transmitting terminal b performs ATA and / or AFA according to the notification signaling in step S903, the transmitting terminal b transmits an indication information indicating that the ATA and / or AFA has been performed. and Time information can be sent to the LMF.

[0144] In step S907, the LMF determines the location of the transmitting terminal b.

[0145] In one embodiment, before the LMF determines the location of the transmitting terminal b, the LMF may also receive base station location information transmitted from the base station.

[0146] In this way, the LMF receives the time information of the ATA and / or AFA transmitted each time the transmitting terminal b performed the ATA and / or AFA, and can determine the time when the transmitting terminal b performed the ATA and / or AFA two adjacent times. The LMF can determine the location of the transmitting terminal b based on the uplink positioning measurement amount transmitted from the receiving terminal a and the location information of each base station associated with the transmitting terminal b, which are received within the time range when the transmitting terminal b performed the ATA and / or AFA two adjacent times.

[0147] For example, the LMF can be calculated according to equations (1) and (2): Sending terminal b The specific implementation is similar to the steps of the downlink positioning method described above, so it is omitted here.

[0148] In the embodiments of the present disclosure, the sidelink positioning methods shown in Figures 8 and 9 can also be applied to multi-RTT positioning. When the positioning method is multi-RTT positioning, neither the receiving terminal a nor the transmitting terminal b can perform ATA and / or AFA within the time range in which the receiving terminal a and the transmitting terminal b calculate the terminal transmission and reception time difference, i.e., within the time range in which the receiving terminal a measures the SL PRS and obtains the sidelink positioning measurement value. For example, as shown in Figure 10, [t5-Δt1, t6+Δt1] is the time range in which the receiving terminal a calculates the terminal transmission and reception time difference, t9 indicates the start time of the time range in which the receiving terminal a performs ATA and / or AFA, and t 10 indicates the end point of the time range in which the receiving terminal a performs ATA and / or AFA, Δt1 indicates the remaining amount, and Δt1 ≥ 0. [t7-Δt2, t8+Δt2] is the time range in which the transmitting terminal b calculates the terminal transmission and reception time difference, and t 11 indicates the start time of the time range in which the transmitting terminal b performs ATA and / or AFA, and t 12 indicates the end point of the time range in which transmitting terminal b performs ATA and / or AFA, and Δt2 indicates the remaining amount, where Δt2 ≥ 0. The RTT of the SL PRS between receiving terminal a and transmitting terminal b can be expressed as Equation 3.

[0149]

number

[0150] In this embodiment, transmitting terminal b can be considered as the base station of receiving terminal a. For example, as shown in FIG. 11, if UE2 is the transmitting terminal and UE1 is the receiving terminal, assuming that a 5 ms SL PRS period includes four consecutive SL slots, UE2 can instruct UE1 to perform ATA and / or AFA operations in the first SL slot, i.e., slot #3, and UE2 can perform ATA and / or AFA operations in the second SL slot, i.e., slot #4. UE1 can transmit SRS-Pos1 to UE2 in the third SL slot, i.e., slot #5, and UE2 can transmit SRS-Pos2 to UE1 in the fourth SL slot, i.e., slot #6. This can prevent the terminal from performing ATA and / or AFA operations within the time range in which the SL PRS is processed.

[0151] Based on the same technical idea, an embodiment provided by the present disclosure provides a flowchart of a terminal positioning method, which is performed by a terminal, and as shown in FIG. 12, the method includes the following steps:

[0152] In step S1201, ATA and / or AFA is performed according to notification signaling sent from a network side device.

[0153] The notification signaling includes information instructing the terminal to perform ATA and / or AFA.

[0154] In step S1202, the terminal transmits time information when ATA and / or AFA is performed.

[0155] The time information of the ATA and / or AFA is used to determine the location of the terminal.

[0156] Based on the same technical idea, an embodiment provided by the present disclosure provides a flowchart of a terminal positioning method, which is performed by a base station, and as shown in FIG.

[0157] In step S1301, a terminal capability report sent from a first terminal is received.

[0158] The terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing ATA and / or AFA according to predefined criteria.

[0159] In step S1302, notification signaling is transmitted.

[0160] The notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0161] Based on the same technical idea, an embodiment provided by the present disclosure provides a flowchart of a terminal positioning method, which is performed by an LMF, as shown in Figure 14, and includes the following steps:

[0162] In step S1401, the time information transmitted from the first terminal when the first terminal performed ATA and / or AFA is received.

[0163] In step S1402, the location of the first terminal is determined based on the time information of the ATA and / or AFA.

[0164] Based on the same technical idea, in an embodiment provided by the present disclosure, a terminal is provided, which includes a adjusting unit 1501 and a first sending unit 1502, as shown in FIG.

[0165] The adjustment unit 1501 performs ATA and / or AFA according to notification signaling sent from a network side device, and the notification signaling includes instruction information for instructing the terminal to perform ATA and / or AFA.

[0166] The first sending unit 1502 sends time information when the terminal performs ATA and / or AFA to the LMF, and the time information of the ATA and / or AFA is used to determine the location of the terminal.

[0167] In an alternative embodiment, a processing unit may further be included before the adjustment unit 1501 .

[0168] The processing unit is specifically used for sending to the network side device a report that the terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) and receiving notification signaling sent from the network side device, or for sending to the network side device a report that the terminal supports performing ATA and / or AFA according to a predefined criterion and receiving notification signaling sent from the network side device.

[0169] In one alternative embodiment, the adjustment unit 1501 is specifically used to perform ATA and / or AFA within the time range in which the VAW is located when the time range in which the VAW indicated by the VAW configuration parameter is located does not overlap with the signal processing time range, and the signal processing time range is the time range in which the positioning reference signal is processed.

[0170] In one alternative embodiment, the adjustment unit 1501 is specifically further used to perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal when the time range in which the VAW is located indicated by the VAW configuration parameters overlaps partially or completely with the signal processing time range.

[0171] In one alternative embodiment, the adjustment unit 1501 is specifically used to perform ATA and / or AFA at a first time point, which is any time point within the time range in which the VAW is located, and discard the positioning reference signal at the first time point, when the priority of the VAW is higher than the priority of the positioning reference signal; and to perform ATA and / or AFA at any time point within the time range in which the VAW is located except a second time point, when the priority of the VAW is lower than the priority of the positioning reference signal, and the second time point is the time point at which the terminal processes the positioning reference signal.

[0172] In one alternative embodiment, the instruction information included in the notification signaling includes a predefined criterion, which instructs the terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0173] In an alternative embodiment, the positioning reference signal is a downlink positioning reference signal (DL PRS), and the signal processing time range is a time range of a measurement interval (MG) or a downlink positioning reference signal execution window (PPW) determined by a resource configuration parameter of the DL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the DL PRS transmitted from a base station; the positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), and the signal processing time range is determined by a resource configuration parameter of the UL SRS-Pos transmitted from a base station, and processing the positioning reference signal means transmitting the UL SRS-Pos to a base station; or the positioning reference signal is a sidelink positioning reference signal (SL PRS), and the terminal is a receiving terminal, and the signal processing time range is determined by a time range of a measurement interval (MG) or a downlink positioning reference signal execution window (PPW) determined by a resource configuration parameter of the SL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the SL PRS transmitted from a transmitting terminal. Alternatively, the positioning reference signal is an SL PRS, the terminal is a transmitting terminal, the signal processing time range is determined by a resource configuration parameter of the SL PRS transmitted from the base station, and processing the positioning reference signal means transmitting an SL PRS to the receiving terminal.

[0174] In an alternative embodiment, the notification signaling is a Long Term Evolution Positioning Protocol (LPP) signaling transmitted from the LMF, or the notification signaling is a Radio Resource Control (RRC) signaling, a Medium Access Control Layer Control Element (MAC CE) signaling, or a Downlink Control Information (DCI) signaling transmitted from the base station.

[0175] Exemplarily, the network side device may be an entity or device such as, but not limited to, a base station or an LMF.

[0176] Based on the same technical idea, in an embodiment provided by the present disclosure, a base station is provided, which includes a first receiving unit 1601 and a second transmitting unit 1602, as shown in FIG.

[0177] The first receiving unit 1601 receives a terminal capability report sent from a first terminal, and the terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing ATA and / or AFA according to a predefined criterion.

[0178] The second transmitting unit 1602 transmits notification signaling to the first terminal, instructing the first terminal to perform ATA and / or AFA.

[0179] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, wherein the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or the notification signaling includes a predefined criterion, wherein the predefined criterion instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, wherein the positioning reference signal is a downlink positioning reference signal (DL PRS), an uplink positioning reference signal (UL SRS-Pos), or a sidelink positioning reference signal (SL PRS), and the signal processing time range is a time range for processing the positioning reference signal.

[0180] In one alternative embodiment, the base stations include a serving base station and a neighboring base station.

[0181] In an alternative embodiment, the notification signaling is Radio Resource Control (RRC) signaling, Medium Access Control Layer Control Element (MAC CE) signaling or Downlink Control Information (DCI) signaling.

[0182] Based on the same technical idea, in an embodiment provided by the present disclosure, an LMF is provided, which includes a second receiving unit 1701 and a determining unit 1702, as shown in FIG.

[0183] The second receiving unit 1701 receives the time information transmitted from the first terminal when the first terminal performed ATA and / or AFA.

[0184] The determining unit 1702 determines the location of the first terminal based on the time information of the ATA and / or AFA.

[0185] In an alternative embodiment, the determination unit 1702 is specifically used to determine, based on the received time information of the ATA and / or AFA, a time range in which the first terminal performed the ATA and / or AFA two adjacent times, and to determine the location of the first terminal based on each positioning measurement of the first terminal acquired within the time range, where the positioning measurement is obtained by measuring a positioning reference signal corresponding to the first terminal.

[0186] In an alternative embodiment, a second processing unit may be further included before the second receiving unit 1701 .

[0187] The second processing unit is specifically used to receive a terminal capability report sent from a first terminal and send notification signaling to the first terminal, wherein the terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to predefined criteria, and the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0188] In one alternative embodiment, the notification signaling is Long Term Evolution Positioning Protocol (LPP) signaling.

[0189] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or the notification signaling includes a predefined criterion, and the predefined criterion instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0190] In one alternative embodiment, the positioning reference signal is a DL PRS, and the positioning measurement quantity is an RSTD, a terminal transmission and reception time difference, a downlink POA, or a downlink PDOA transmitted from the first terminal; the positioning reference signal is a UL SRS-Pos, and the positioning measurement quantity is an uplink RTOA, a base station transmission and reception time difference, an uplink POA, or an uplink PDOA transmitted from a base station; the positioning reference signal is an SL PRS, the first terminal is a receiving terminal, and the positioning measurement quantity is a TDOA transmitted from the first terminal, a receiving terminal transmission and reception time difference, an SL POA, or an SL PDOA; or the positioning reference signal is an SL PRS, the first terminal is a transmitting terminal, and the positioning measurement quantity is the transmission and reception time difference of the first terminal.

[0191] In an alternative embodiment, if the positioning reference signal is a DL PRS, LMF further includes a third receiving unit.

[0192] The third receiving unit specifically receives the positioning measurement value and the quality information of the positioning measurement value obtained by measuring the DL PRS transmitted from the first terminal.

[0193] In an alternative embodiment, if the positioning reference signal is a SL PRS, LMF further includes a fourth receiving unit.

[0194] The fourth receiving unit specifically receives the positioning measurement value and the quality information of the positioning measurement value obtained by measuring the SL PRS transmitted from the first terminal.

[0195] In an alternative embodiment, the quality information comprises SNR, SINR, or variance of measurement error.

[0196] Based on the same technical idea, the embodiments of the present disclosure further provide a terminal, which can perform any terminal positioning method implemented in the above-mentioned embodiments.

[0197] 18 shows a structural diagram of the terminal provided by an embodiment of the present disclosure, that is, another structural diagram of the terminal. As shown in FIG. 18, the terminal includes a processor 1801, a memory 1802, and a transceiver 1803.

[0198] The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 can store data used when the processor 1801 performs operations. The transceiver 1803 transmits and receives data under the control of the processor 1801.

[0199] The bus architecture may include any amount of interconnected buses and bridges, specifically connected by various circuits, one or more processors represented by processor 1801 and memory represented by memory 1802. The bus architecture may also integrate and connect various circuits, such as peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be further described herein. The bus interface provides an interface. The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 may store data used when the processor 1801 performs operations.

[0200] The flow according to the embodiments of the present disclosure may be applied to or implemented by the processor 1801. In the implementation process, each step of the signal processing flow is completed by a hardware integrated logic circuit or software instructions within the processor 1801. The processor 1801 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute each method, step, and logic block diagram disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any other conventional processor. The steps of the methods disclosed in the embodiments of the present disclosure may be executed by a hardware processor or by a combination of hardware and software modules within the processor. The software modules may be located in a storage medium known in the art, such as a random memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable / writable programmable memory, or a register. The storage medium is placed in the memory 1802, and the processor 1801 reads the information in the memory 1802 and combines the hardware to complete the steps of the signal processing flow.

[0201] Specifically, the processor 1801 reads the computer instructions in the memory 1802, and when the processor 1801 executes the computer instructions, The ATA and / or AFA is performed according to notification signaling sent from a network side device, and the transceiver is controlled to transmit time information when the ATA and / or AFA is performed by the terminal to the LMF, where the notification signaling includes instruction information for instructing the terminal to perform the ATA and / or AFA, and the time information of the ATA and / or AFA is used to determine the location of the terminal.

[0202] In one alternative embodiment, the transceiver 1803 is specifically used to send to the network side device a report that the terminal supports performing ATA and / or AFA within a valid coordination time window (VAW), or to send to the network side device a report that the terminal supports performing ATA and / or AFA according to predefined criteria, and to receive notification signaling sent from the network side device.

[0203] In one alternative embodiment, the processor 1801 is specifically used to perform ATA and / or AFA within the time range in which the VAW is located when the time range in which the VAW is located indicated by the VAW configuration parameters does not overlap with the signal processing time range, and the signal processing time range is the time range in which the positioning reference signal is processed.

[0204] In one alternative embodiment, the processor 1801 is specifically used to perform ATA and / or AFA within the time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal when the time range in which the VAW is located indicated by the VAW configuration parameters overlaps partially or completely with the signal processing time range.

[0205] In one alternative embodiment, the processor 1801 is used to perform ATA and / or AFA at a first point in time, which is any point in time within the time range in which the VAW is located, when the priority of the VAW is higher than the priority of the positioning reference signal, and to perform ATA and / or AFA at any point in time within the time range in which the VAW is located except a second point in time, when the priority of the VAW is lower than the priority of the positioning reference signal, the second point in time being the point in time when the terminal processes the positioning reference signal.

[0206] In one alternative embodiment, the instruction information included in the notification signaling includes a predefined criterion, which instructs the terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0207] In an alternative embodiment, the positioning reference signal is a DL PRS, and the signal processing time range is a time range of MG or PPW determined by a resource configuration parameter of the DL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the DL PRS transmitted from a base station; or the positioning reference signal is a UL SRS-Pos, and the signal processing time range is determined by a resource configuration parameter of the UL SRS-Pos transmitted from a base station, and processing the positioning reference signal means transmitting the UL SRS-Pos to a base station; or the positioning reference signal is a SL PRS, and the terminal is a receiving terminal, and the signal processing time range is determined by a time range of MG or PPW indicated by a resource configuration parameter of the SL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the SL PRS transmitted from a transmitting terminal; or the positioning reference signal is a SL PRS, and the terminal is a transmitting terminal, and the signal processing time range is determined by a time range of MG or PPW indicated by a resource configuration parameter of the SL PRS transmitted from a base station. It is determined by the resource configuration parameters of the PRS, and processing the positioning reference signal means transmitting the SL PRS to the receiving terminal.

[0208] In an alternative embodiment, the notification signaling is LPP signaling sent from the LMF, or the notification signaling is RRC signaling, MAC CE signaling, or DCI signaling sent from the base station.

[0209] Exemplarily, the network side device may be an entity or equipment such as, but not limited to, a base station or an LMF.

[0210] Based on the same technical idea, an embodiment of the present disclosure further provides a base station, which can perform any terminal positioning method implemented in the above-mentioned embodiments.

[0211] 19 shows a structural diagram of the base station provided by the embodiment of the present disclosure, that is, another structural diagram of the network side device. As shown in FIG. 19, the network side device includes a processor 1901, a memory 1902, and a transceiver 1903.

[0212] The processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1902 can store data used when the processor 1901 performs operations. The transceiver 1903 transmits and receives data under the control of the processor 1901.

[0213] The bus architecture may include any amount of interconnected buses and bridges, specifically connected by various circuits, one or more processors represented by processor 1901 and memory represented by memory 1902. The bus architecture may also integrate and connect various circuits, such as peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be further described herein. The bus interface provides an interface. The processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1902 may store data used when the processor 1901 performs operations.

[0214] The flow according to the embodiments of the present disclosure may be applied to or implemented by the processor 1901. In the implementation process, each step of the signal processing flow is completed by a hardware integrated logic circuit or software instructions within the processor 1901. The processor 1901 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute each method, step, and logic block diagram disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any other conventional processor. The steps of the methods disclosed in the embodiments of the present disclosure may be executed and completed by a hardware processor or by a combination of hardware and software modules within the processor. The software modules may be arranged in a storage medium known in the art, such as a random memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable / writable programmable memory, or a register. The storage medium is placed in the memory 1902, and the processor 1901 reads the information in the memory 1902 and combines the hardware to complete the steps of the signal processing flow.

[0215] Specifically, the processor 1901 reads computer instructions in the memory 1902, and when the processor 1901 executes the computer instructions, it controls the transceiver 1903 to receive a terminal capability report sent from a first terminal and send notification signaling to the first terminal, wherein the terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to a predefined criterion, and the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0216] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, wherein the priority type parameter is used to indicate a priority relationship between the VAW and a DL PRS; or the notification signaling includes a predefined criterion, wherein the predefined criterion instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, wherein the positioning reference signal is a DL PRS, an UL SRS-Pos, or an SL PRS, and the signal processing time range is a time range for processing the positioning reference signal.

[0217] In an alternative embodiment, the base stations include a serving base station and a neighboring base station.

[0218] In an alternative embodiment, the notification signaling is RRC signaling, MAC CE signaling, or DCI signaling.

[0219] Based on the same technical idea, an LMF is further provided in the embodiments of the present disclosure, which can implement any terminal positioning method implemented in the above-mentioned embodiments.

[0220] 20 shows a structural schematic diagram of an LMF provided by an embodiment of the present disclosure, that is, another structural schematic diagram of an LMF. As shown in FIG. 20, the LMF includes a processor 2001, a memory 2002, and a transceiver 2003.

[0221] The processor 2001 is responsible for managing the bus architecture and general processing, and the memory 2002 can store data used when the processor 2001 performs operations. The transceiver 2003 transmits and receives data under the control of the processor 2001.

[0222] The bus architecture may include any amount of interconnected buses and bridges, specifically connected by various circuits, one or more processors represented by processor 2001 and memory represented by memory 2002. The bus architecture may also integrate and connect various circuits, such as peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be further described herein. The bus interface provides an interface. The processor 2001 is responsible for managing the bus architecture and general processing, and the memory 2002 may store data used when the processor 2001 performs operations.

[0223] The flow according to the embodiments of the present disclosure may be applied to or implemented by the processor 2001. In the implementation process, each step of the signal processing flow is completed by a hardware integrated logic circuit or software instructions within the processor 2001. The processor 2001 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute each method, step, and logic block diagram disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any other conventional processor. The steps of the methods disclosed in the embodiments of the present disclosure may be executed by a hardware processor or by a combination of hardware and software modules within the processor. The software modules may be located in a storage medium known in the art, such as a random memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable / writable programmable memory, or a register. The storage medium is placed in the memory 2002, and the processor 2001 reads the information in the memory 2002 and combines the hardware to complete the steps of the signal processing flow.

[0224] Specifically, the processor 2001 reads computer instructions in the memory 2002, and when the processor 2001 executes the computer instructions, it controls the transceiver 2003 to receive time information transmitted from the first terminal when the first terminal performed ATA and / or AFA, and determine the location of the first terminal based on the time information of the ATA and / or AFA.

[0225] In one alternative embodiment, the processor 2001 is specifically used to determine, based on the received time information of the ATA and / or AFA, a time range in which the first terminal performed the ATA and / or AFA two adjacent times, and to determine the location of the first terminal based on each positioning measurement of the first terminal acquired within the time range, wherein the positioning measurement is obtained by measuring a positioning reference signal corresponding to the first terminal.

[0226] In one alternative embodiment, the transceiver 2003 can be further used to receive a terminal capability report sent from a first terminal and to send notification signaling, wherein the terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a valid coordination time window (VAW) or supports performing the ATA and / or AFA according to predefined criteria, and the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

[0227] In one alternative embodiment, the notification signaling is Long Term Evolution Positioning Protocol (LPP) signaling.

[0228] In an alternative embodiment, the notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate a priority relationship between the VAW and the DL PRS; or the notification signaling includes a predefined criterion, and the predefined criterion instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal.

[0229] In an alternative embodiment, the positioning reference signal is a downlink positioning reference signal (DL PRS), and the positioning measurement is a reference signal time difference (RSTD), a terminal transmission and reception time difference, a downlink arrival carrier phase value (POA), or a downlink carrier phase difference (PDOA) transmitted from the first terminal; the positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), and the positioning measurement is an uplink relative time of arrival (RTOA) transmitted from a base station, a base station transmission and reception time difference, an uplink POA, or an uplink PDOA; the positioning reference signal is a sidelink positioning reference signal (SL PRS), and the first terminal is a receiving terminal, and the positioning measurement is a time difference of arrival (TDOA) transmitted from the first terminal, a receiving terminal transmission and reception time difference, an SL POA, or an SL PDOA; or the positioning reference signal is an SL PRS, and the first terminal is a transmitting terminal, and the positioning measurement is a first terminal transmission and reception time difference.

[0230] In an alternative embodiment, the processor 2001 may also be used to receive positioning measurements and quality information of the positioning measurements obtained by measuring the DL PRS transmitted from the first terminal.

[0231] In an alternative embodiment, the processor 2001 may also be used to receive positioning measurements and quality information of the positioning measurements obtained by measuring the SL PRS transmitted from the first terminal.

[0232] In an alternative embodiment, the quality information comprises a signal-to-noise ratio (SNR), a signal-to-interference-and-noise ratio (SINR), or a variance of the measurement error.

[0233] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware. The present disclosure may also take the form of a computer program product embodied in one or more computer-usable storage media (including, but not limited to, diskettes, CD-ROMs, optical memory, etc.) having program code recorded thereon that is usable by one or more computers.

[0234] The present disclosure will be described with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to the present disclosure. It should be understood that each flow and / or block of the flowcharts and / or block diagrams, and combinations of the flows and / or blocks of the flowcharts and / or block diagrams, can be implemented through computer program instructions. Such computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an insert processor, or a processor of other programmable data processing apparatus to create a single machine, thereby creating an apparatus for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams through instructions executed by the processor of the computer or other programmable data processing apparatus.

[0235] Such computer program instructions may be stored in a computer-readable memory that enables a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable memory enable an article of manufacture to be produced that includes an instruction apparatus that performs the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0236] Such computer program instructions may be embodied in a computer or other programmable data processing apparatus such that the computer or other programmable data processing apparatus executes a series of operational steps to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable data processing apparatus provide steps for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0237] It is obvious that those skilled in the art can make various modifications and variations to the present disclosure without departing from the subject matter and scope of the present application. Therefore, if such modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and the equivalent technical scope, the present application intends to include such modifications and variations.

Claims

1. A terminal positioning method applied to a terminal, A step of performing automatic timing offset control (ATA) and / or automatic frequency offset control (AFA) according to notification signaling sent from a network side device (S1201), wherein the notification signaling includes instruction information instructing the terminal to perform ATA and / or AFA; A terminal positioning method comprising: a step of transmitting time information when the ATA and / or AFA was executed by the terminal (S1202), wherein the time information of the ATA and / or AFA is used to determine the position of the terminal.

2. Before performing automatic timing offset control (ATA) and / or automatic frequency offset control (AFA) according to the notification signaling sent from the network side device, the method includes: Sending a report to the network side device that the terminal supports performing ATA and / or AFA within a valid coordination time window (VAW), and receiving a notification signaling sent from the network side device; or The method further includes the steps of transmitting a report to the network side device that the terminal supports performing the ATA and / or AFA according to a predefined criterion, and receiving notification signaling transmitted from the network side device. The terminal positioning method according to claim 1 .

3. The indication information included in the notification signaling includes a VAW configuration parameter; The step of performing ATA and / or AFA according to the notification signaling sent from the network side device includes: and performing ATA and / or AFA within a time range in which the VAW indicated by the VAW configuration parameter is located, when the time range in which the VAW is located does not overlap with a signal processing time range, wherein the signal processing time range is a time range in which a positioning reference signal is processed. The terminal positioning method according to claim 2.

4. The indication information included in the notification signaling further includes a priority type parameter for indicating a priority relationship between the VAW and the positioning reference signal; The step of performing ATA and / or AFA according to the notification signaling sent from the network side device includes: When a time range in which the VAW indicated by the VAW configuration parameter is located overlaps with the signal processing time range in part or in whole, the method further includes performing ATA and / or AFA within the time range in which the VAW is located according to a priority relationship between the VAW and the positioning reference signal. The terminal positioning method according to claim 3.

5. The step of performing ATA and / or AFA within a time range in which the VAW is located according to the priority relationship between the VAW and the positioning reference signal includes: If the priority of the VAW is higher than the priority of the positioning reference signal, performing ATA and / or AFA at a first time point, which is an arbitrary time point within a time range in which the VAW is located; and performing ATA and / or AFA at any time point within the time range in which the VAW is located, except for a second time point, when the priority of the VAW is lower than that of the positioning reference signal, wherein the second time point is a time point when the terminal processes the positioning reference signal. The terminal positioning method according to claim 4.

6. The instruction information included in the notification signaling includes a predefined criterion, the predefined criterion instructing the terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, and the signal processing time range is a time range for processing a positioning reference signal. The terminal positioning method according to claim 2.

7. The positioning reference signal is a downlink positioning reference signal (DL PRS), and the signal processing time range is a measurement interval (MG) or a time range of a downlink positioning reference signal execution window (PPW) determined by a resource configuration parameter of the DL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the DL PRS transmitted from a base station; or The positioning reference signal is an uplink positioning reference signal (UL SRS-Pos), the signal processing time range is determined by a resource configuration parameter of the UL SRS-Pos transmitted from a base station, and processing the positioning reference signal means transmitting the UL SRS-Pos to the base station; or The positioning reference signal is a sidelink positioning reference signal (SL PRS), the terminal is a receiving terminal, the signal processing time range is determined by a time range of an MG or PPW indicated in a resource configuration parameter of the SL PRS transmitted from an LMF, and processing the positioning reference signal means receiving and measuring the SL PRS transmitted from a transmitting terminal, or The positioning reference signal is a SL PRS, the terminal is a transmitting terminal, the signal processing time range is determined by a resource configuration parameter of the SL PRS transmitted from a base station, and processing the positioning reference signal means transmitting the SL PRS to a receiving terminal.

7. A terminal positioning method according to claim 3.

8. The notification signaling is a Long Term Evolution Positioning Protocol (LPP) signaling sent from a Location Management Function Entity (LMF), or The notification signaling is a radio resource control (RRC) signaling, a medium access control layer control element (MAC CE) signaling, or a downlink control information (DCI) signaling transmitted from a base station. The terminal positioning method according to any one of claims 1 to 6.

9. A terminal positioning method applied to a base station, comprising: receiving a terminal capability report sent from a first terminal (S1301), wherein the terminal capability report characterizes that the first terminal supports performing ATA and / or AFA within a VAW, or supports performing the ATA and / or AFA according to a predefined criterion; A terminal positioning method, comprising: a step of transmitting notification signaling (S1302), wherein the notification signaling is used to instruct the first terminal to perform ATA and / or AFA.

10. The notification signaling includes a configuration parameter and a priority type parameter of the VAW, and the priority type parameter is used to indicate the priority relationship between the VAW and the DL PRS; or The notification signaling includes a predefined criterion, which instructs the first terminal not to perform ATA and / or AFA within a signal processing time range, and to perform ATA and / or AFA after processing a positioning reference signal, the positioning reference signal being a DL PRS, an UL SRS-Pos, or an SL PRS, and the signal processing time range being a time range for processing the positioning reference signal. The terminal positioning method according to claim 9.

11. The base stations include a serving base station and a neighboring base station. The terminal positioning method according to claim 9 or 10.

12. The notification signaling is RRC signaling, MAC CE signaling, or DCI signaling. The terminal positioning method according to claim 9 or 10.

13. A terminal including a memory (1802), a transceiver (1803), and a processor (1801), the memory stores computer instructions; the transceiver transmits and receives data under the control of the processor; 7. A terminal, wherein the processor reads a computer program stored in the memory and executes the terminal positioning method according to claim 1.

14. A base station including a memory (1902), a transceiver (1903), and a processor (1901), the memory stores computer instructions; A base station, characterized in that the transceiver executes the terminal positioning method according to claim 9 or 10 under the control of a processor.

15. A computer-readable storage medium having computer instructions stored thereon, comprising: A computer-readable storage medium, characterized in that the computer instructions, when executed by a processor, implement the terminal positioning method according to any one of claims 1 to 6, 9 or 10.

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